New nokian wr a4 forget the forecasts advanced winter grip on dry, wet and snow-covered roads due to functional performance siping extremely stable and balanced high-speed performance maximum comfort main innovations: functional performance siping. More winter grip, better steering feel . Each tread block and sipe in the stylish tread pattern has a precise shape and role, and this can be felt in the excellent grip and handling properties. The stiff outer shoulder, the centipede siping in the centre area and the zone-optimised siping all form a controlled combination that allows the nokian wr a4 to roll safely and comfortably in varying central european winter weather. Centipede siping. Maximum snow grip, precise handling. The centre area is dominated by a sturdy longitudinal rib consisting of tread blocks with jagged sipes that resemble the footprints of a centipede. The staggered 3-dimensional centipede siping offers maximum contact surface and works with full effect at different turning angles, increasing grip on snow and slush and improving control. Performance traction silica rubber compound. Precise grip, excellent wear resistance, low fuel consumption. The rubber compound, which contains natural rubber, silica and canola oil, ensures excellent winter grip. This state-of-the-art compound innovation also improves driving stability and wear resistance. Canola oil provides tear strength. Tear strength makes the tyre extremely resistant to wear, impacts and punctures. T...